package cn.sunshuai.filter;

import com.alibaba.fastjson.JSON;
import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;
import com.netflix.zuul.exception.ZuulException;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.HashMap;
import java.util.Map;
@Component
public class LoginCheckFilter extends ZuulFilter {
    @Override
    public String filterType() {
        return "pre";
    }

    @Override
    public int filterOrder() {
        return 0;
    }

    @Override
    public boolean shouldFilter() {
        HttpServletRequest request = RequestContext.getCurrentContext().getRequest();
        String uri = request.getRequestURI();
        if(uri.endsWith("/login")||uri.endsWith("/register")){
            return false;
        }
        return true;
    }

    @Override
    public Object run() throws ZuulException {
        HttpServletRequest request = RequestContext.getCurrentContext().getRequest();
        HttpServletResponse response = RequestContext.getCurrentContext().getResponse();
        String token = request.getHeader("token");
        if(!StringUtils.hasLength(token)){
            Map<String, Object> map = new HashMap<>();
            map.put("success",false);
            map.put("message","请登录");
            response.setContentType("application/json;charset=utf-8");
            String strJson = JSON.toJSONString(map);
            try {
                response.getWriter().write(strJson);
            } catch (Exception e) {
                e.printStackTrace();
            }
            RequestContext.getCurrentContext().setSendZuulResponse(false);
        }
        return null;
    }
}
